Effect of Warm Equal-Channel Angular Pressing on the Structure and Mechanical Properties of Al-Mg-Ca-Mn-Fe-Zr Alloy

被引：5

作者：

Rogachev, S. O. ^{[1
]}

Naumova, E. A. ^{[1
,2
]}

Karelin, R. D. ^{[1
,3
]}

Andreev, V. A. ^{[3
,4
]}

Perkas, M. M. ^{[3
]}

Yusupov, V. S. ^{[3
]}

Khatkevich, V. M. ^{[1
]}

机构：

[1] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia

[2] Moscow State Technol Univ Stankin, Moscow 127994, Russia

[3] Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119334, Russia

[4] MATEK SMA, Moscow 117449, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2021年 / 122卷 / 01期

关键词：

Al-Mg-based alloy; severe plastic deformation; ECAP; microstructure; mechanical properties;

D O I：

10.1134/S0031918X21010105

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of equal-channel angular pressing on the structure, mechanical properties, and thermal stability of the Al-5% Mg-1% Ca-0.9% Mn-0.5% Fe-0.1% Zr alloy has been studied. Samples in the annealed state have been subjected to ECAP under the following conditions: by route B-C, at a temperature of 400 degrees C, an angle of channel intersection of 110 degrees, and the number of passes of N = 8. ECAP results in (i) the formation of a substructure with a high dislocation density and (ii) the precipitation of Al-6(Mn, Fe) and Al3Zr nanoparticles in the alloy. ECAP increases both strength and plasticity of the alloy. The strength of the alloy after ECAP increases by a factor of 1.3-1.5 and the relative elongation, by a factor of 2.0-2.5 in comparison with the initial state.

引用

页码：67 / 73

页数：7

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